mirror of
https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
341 lines
7.4 KiB
C
341 lines
7.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2013 Google, Inc
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*/
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#include <errno.h>
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#include <linux/input.h>
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#include <SDL/SDL.h>
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#include <sound.h>
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#include <asm/state.h>
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static struct sdl_info {
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SDL_Surface *screen;
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int width;
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int height;
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int depth;
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int pitch;
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uint frequency;
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uint audio_pos;
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uint audio_size;
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uint8_t *audio_data;
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bool audio_active;
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bool inited;
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} sdl;
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static void sandbox_sdl_poll_events(void)
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{
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/*
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* We don't want to include common.h in this file since it uses
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* system headers. So add a declation here.
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*/
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extern void reset_cpu(unsigned long addr);
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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switch (event.type) {
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case SDL_QUIT:
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puts("LCD window closed - quitting\n");
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reset_cpu(1);
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break;
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}
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}
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}
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static int sandbox_sdl_ensure_init(void)
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{
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if (!sdl.inited) {
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if (SDL_Init(0) < 0) {
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printf("Unable to initialize SDL: %s\n",
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SDL_GetError());
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return -EIO;
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}
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atexit(SDL_Quit);
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sdl.inited = true;
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}
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return 0;
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}
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int sandbox_sdl_init_display(int width, int height, int log2_bpp)
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{
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struct sandbox_state *state = state_get_current();
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int err;
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if (!width || !state->show_lcd)
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return 0;
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err = sandbox_sdl_ensure_init();
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if (err)
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return err;
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if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) {
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printf("Unable to initialize SDL LCD: %s\n", SDL_GetError());
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return -EPERM;
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}
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SDL_WM_SetCaption("U-Boot", "U-Boot");
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sdl.width = width;
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sdl.height = height;
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sdl.depth = 1 << log2_bpp;
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sdl.pitch = sdl.width * sdl.depth / 8;
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sdl.screen = SDL_SetVideoMode(width, height, 0, 0);
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sandbox_sdl_poll_events();
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return 0;
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}
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int sandbox_sdl_sync(void *lcd_base)
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{
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SDL_Surface *frame;
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frame = SDL_CreateRGBSurfaceFrom(lcd_base, sdl.width, sdl.height,
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sdl.depth, sdl.pitch,
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0x1f << 11, 0x3f << 5, 0x1f << 0, 0);
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SDL_BlitSurface(frame, NULL, sdl.screen, NULL);
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SDL_FreeSurface(frame);
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SDL_UpdateRect(sdl.screen, 0, 0, 0, 0);
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sandbox_sdl_poll_events();
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return 0;
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}
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#define NONE (-1)
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#define NUM_SDL_CODES (SDLK_UNDO + 1)
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static int16_t sdl_to_keycode[NUM_SDL_CODES] = {
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/* 0 */
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, KEY_BACKSPACE, KEY_TAB,
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NONE, NONE, NONE, KEY_ENTER, NONE,
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NONE, NONE, NONE, NONE, KEY_POWER, /* use PAUSE as POWER */
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/* 20 */
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, KEY_ESC, NONE, NONE,
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NONE, NONE, KEY_SPACE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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/* 40 */
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NONE, NONE, NONE, NONE, KEY_COMMA,
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KEY_MINUS, KEY_DOT, KEY_SLASH, KEY_0, KEY_1,
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KEY_2, KEY_3, KEY_4, KEY_5, KEY_6,
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KEY_7, KEY_8, KEY_9, NONE, KEY_SEMICOLON,
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/* 60 */
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NONE, KEY_EQUAL, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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/* 80 */
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, KEY_BACKSLASH, NONE, NONE,
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NONE, KEY_GRAVE, KEY_A, KEY_B, KEY_C,
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/* 100 */
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KEY_D, KEY_E, KEY_F, KEY_G, KEY_H,
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KEY_I, KEY_J, KEY_K, KEY_L, KEY_M,
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KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R,
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KEY_S, KEY_T, KEY_U, KEY_V, KEY_W,
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/* 120 */
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KEY_X, KEY_Y, KEY_Z, NONE, NONE,
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NONE, NONE, KEY_DELETE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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/* 140 */
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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/* 160 */
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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/* 180 */
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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/* 200 */
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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/* 220 */
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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/* 240 */
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, NONE, NONE, NONE, NONE,
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NONE, KEY_KP0, KEY_KP1, KEY_KP2, KEY_KP3,
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/* 260 */
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KEY_KP4, KEY_KP5, KEY_KP6, KEY_KP7, KEY_KP8,
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KEY_KP9, KEY_KPDOT, KEY_KPSLASH, KEY_KPASTERISK, KEY_KPMINUS,
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KEY_KPPLUS, KEY_KPENTER, KEY_KPEQUAL, KEY_UP, KEY_DOWN,
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KEY_RIGHT, KEY_LEFT, KEY_INSERT, KEY_HOME, KEY_END,
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/* 280 */
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KEY_PAGEUP, KEY_PAGEDOWN, KEY_F1, KEY_F2, KEY_F3,
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KEY_F4, KEY_F5, KEY_F6, KEY_F7, KEY_F8,
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KEY_F9, KEY_F10, KEY_F11, KEY_F12, NONE,
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NONE, NONE, NONE, NONE, NONE,
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/* 300 */
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KEY_NUMLOCK, KEY_CAPSLOCK, KEY_SCROLLLOCK, KEY_RIGHTSHIFT,
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KEY_LEFTSHIFT,
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KEY_RIGHTCTRL, KEY_LEFTCTRL, KEY_RIGHTALT, KEY_LEFTALT, KEY_RIGHTMETA,
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KEY_LEFTMETA, NONE, KEY_FN, NONE, KEY_COMPOSE,
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NONE, KEY_PRINT, KEY_SYSRQ, KEY_PAUSE, NONE,
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/* 320 */
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NONE, NONE, NONE,
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};
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int sandbox_sdl_scan_keys(int key[], int max_keys)
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{
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Uint8 *keystate;
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int i, count;
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sandbox_sdl_poll_events();
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keystate = SDL_GetKeyState(NULL);
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for (i = count = 0; i < NUM_SDL_CODES; i++) {
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if (count >= max_keys)
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break;
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else if (keystate[i])
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key[count++] = sdl_to_keycode[i];
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}
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return count;
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}
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int sandbox_sdl_key_pressed(int keycode)
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{
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int key[8]; /* allow up to 8 keys to be pressed at once */
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int count;
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int i;
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count = sandbox_sdl_scan_keys(key, sizeof(key) / sizeof(key[0]));
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for (i = 0; i < count; i++) {
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if (key[i] == keycode)
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return 0;
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}
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return -ENOENT;
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}
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void sandbox_sdl_fill_audio(void *udata, Uint8 *stream, int len)
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{
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int avail;
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avail = sdl.audio_size - sdl.audio_pos;
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if (avail < len)
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len = avail;
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SDL_MixAudio(stream, sdl.audio_data + sdl.audio_pos, len,
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SDL_MIX_MAXVOLUME);
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sdl.audio_pos += len;
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/* Loop if we are at the end */
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if (sdl.audio_pos == sdl.audio_size)
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sdl.audio_pos = 0;
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}
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int sandbox_sdl_sound_init(void)
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{
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SDL_AudioSpec wanted;
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if (sandbox_sdl_ensure_init())
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return -1;
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if (sdl.audio_active)
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return 0;
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/*
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* At present all sandbox sounds crash. This is probably due to
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* symbol name conflicts with U-Boot. We can remove the malloc()
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* probles with:
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*
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* #define USE_DL_PREFIX
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*
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* and get this:
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*
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* Assertion 'e->pollfd->fd == e->fd' failed at pulse/mainloop.c:676,
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* function dispatch_pollfds(). Aborting.
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*
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* The right solution is probably to make U-Boot's names private or
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* link os.c and sdl.c against their libraries before liking with
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* U-Boot. TBD. For now sound is disabled.
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*/
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printf("(Warning: sandbox sound disabled)\n");
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return 0;
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/* Set the audio format */
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wanted.freq = 22050;
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wanted.format = AUDIO_S16;
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wanted.channels = 1; /* 1 = mono, 2 = stereo */
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wanted.samples = 1024; /* Good low-latency value for callback */
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wanted.callback = sandbox_sdl_fill_audio;
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wanted.userdata = NULL;
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sdl.audio_size = sizeof(uint16_t) * wanted.freq;
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sdl.audio_data = malloc(sdl.audio_size);
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if (!sdl.audio_data) {
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printf("%s: Out of memory\n", __func__);
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return -1;
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}
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sdl.audio_pos = 0;
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if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
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printf("Unable to initialize SDL audio: %s\n", SDL_GetError());
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goto err;
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}
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/* Open the audio device, forcing the desired format */
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if (SDL_OpenAudio(&wanted, NULL) < 0) {
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printf("Couldn't open audio: %s\n", SDL_GetError());
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goto err;
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}
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sdl.audio_active = true;
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return 0;
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err:
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free(sdl.audio_data);
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return -1;
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}
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int sandbox_sdl_sound_start(uint frequency)
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{
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if (!sdl.audio_active)
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return -1;
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sdl.frequency = frequency;
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sound_create_square_wave((unsigned short *)sdl.audio_data,
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sdl.audio_size, frequency);
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sdl.audio_pos = 0;
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SDL_PauseAudio(0);
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return 0;
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}
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int sandbox_sdl_sound_stop(void)
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{
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if (!sdl.audio_active)
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return -1;
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SDL_PauseAudio(1);
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return 0;
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}
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